Faucet-filter



J. M. FORREST, JR.

FAUCET FILTER.

APPLICATION FILED SEPT-27,1819.

Patented Apr 13, 1920.

FIG 2 JAMES M. FORREST, JR., OF SAN FRANCISCO, CALIFORNIA.

FAUGET-FILTER.

Specification of Letters Patent.

Patented 'Apr. 13, 1920.

Application filed September 27, 1919. Serial No. 326,894.

To all whom it may concern:

Be it known that I, JAMES M. FORREST, J r., a citizen of the United States, residing at San Francisco, in the county of San Francisco and State of California, have invented new and useful Improvements in F aucet- Filters, of which the following is a specification.

The object of the present invention is to provide a faucet which can be used to supply either filtered water for drinking purposes, or unfiltered water for ordinary purposes, such as washing, as desired, and whose action, when in use for supplying the unfiltered water, will automatically remove the impurities which have. been previously filtered out when supplying filtered water.

In the accompanying drawing, Figure 1 is a vertical central section on the line 11 of Fig. 2 of my improved filtering faucet, certain parts being shown in side elevation; Fig. 2 is a front view thereof on a reduced scale; Fig. 3 is a top plan view of a direction plate; Fig. 4 is a bottom plan view of the same; Fig. 5 is a sectional view on the line 5-5 of Fig. 4.

Referring to the drawing, 1 indicates a casting divided by a central partition 2 into two vertically extending channels 3, 4. The casting 1 is provided with a tubular extension 6 at right angles to, and communicating with, the channel 3, and which is threaded at its outer end to permit it to be screwed into a supply pipe, not shown. The other channel 4 communicates at its lower end with a conduit formed in the casting and which extends first forwardly, as shown at 7, and then downwardly, as shown at 8.

The upper portion of said casting is cylindrical and threaded externally, as shown at 9, and formed internally with shoulders 11, 12, the shoulder 11 being on a level with the top of the partition 2. Resting upon the shoulder 11 is the rim 10 of a deflecting plate 13, which is formed on its under side with a rib 15 extending diametrically between two portions of the rim 10 of the deflecting plate, which are separated from each other, as by two gaps 25, to permit water to pass over said deflecting plate. Resting upon the rim of said plate 13 and shoulder 12 is a disk 14 of chamois leather. The edge of said disk 14 is bent upwardly over the edge of a fine screen 16 placed on said disk. Above the fine screen is a perforated brass disk 17, the edge of which rests upon the upturned edge of the disk 14 of chamois.

Upon the edge of said disk 17 rests a rubber washer 18, pressed tightly downward by a cylindrical wall 19 of a filtering chamber 20, which has an external shoulder or flange 21 engaged by a flange 22 extending inwardly from a nut 23 surrounding the lower end of the cylinder 19 and screwed on the threaded upper portion of the casting 1. By screwing said nut upon said casting, the cylinder can be pressed very firmly on said rubber washer, thus preventing leakage past said washer.

In the lower portion of the cylindrical chamber 20 is contained a layer 24 of cotton or the like, a similar layer 26 being contained in the upper portion of said chamber 20. The intervening portion of said chamber 20 is filled with charcoal 27 or similar filtering material. Said layers 24 and 26 are retained in place by screens 28, 29, the lower screen 28 being held in place by an expansible spring wire 31 in the form of an incomplete ring, the upper disk by abutment against an inwardly extending shoulder 32. The upper portion of the chamber has a closed end 33, the space between the upper screen 29 and said end forming a chamber 34 for filtered water, from which the water can be conducted by a valve casing 35 having a valve 36 therein, and communicating with a pipe 37 discharging downwardly into a vessel 38, of glass or other material, contained in a pocket 39, formed on the upper end of said chamber 20.

The passage of water through the channels 3 and 4 can be controlled by valves 41, 42, of well known style, operated by handles 43, 44, respectively, on opposite sides of the casting. The channel 8 has an upwardly extending projection 46 for hanging thereon a kettle or other vessel.

When it is desired to obtain only filtered water, the valve 42 is closed, as shown in Fig. 1, and the valve 36 is opened, the water entering through the channel 3 is turned at a right angle, by the deflecting plate 13, then through one of the gaps 25 to the upper side of the deflecting plate, then through the chamois disk 12, and the various filtering media and on through the spout 37 When unfiltered water only is required, the valve 36 is closed and the valve 42 is opened, and the water flows across from the conduits 3 to the conduit 6 between the deflecting plate and the under side of the chamois disk 21, in a thin forcible stream, passing clear across the under surface of the chamois, and the upper surface of the deflecting plate and escaping into the outlet 4: through the gap in the opposite end of the deflecting plate.

The upper surface of the deflecting plate is fluted, causing the Water to have the effect of rapids, thoroughly cleaning the under surface of the first filtering medium (Chamois) from one end to the other, and thus the device possesses great cleaning properties.

The Water pressure forces Water through the chamois 14 and said Water being purified by the passage through the charcoal 27 in the chamber 20, discharges into the vessel 38, placed on top of the filter, thoroughly filtered and purified.

The function of the valve ll is to shut off the main Water supply to the filter in order to change or renew the filtering media.

The Water escapes from the channel 3 into the channel 4 With great force through the narrow passage between the upper roughcnecl surface of the deflecting plate and along the under side of the chamois leather, thus sweeping all the residual material therefrom, and Washing it into the channel l, thus instantaneously removing from the fil ter all the sediment that had been deposited in the previous filterings of Water thereby. The remaining Water, flowing out through the channel 4 after the first flushing of the filter by the Water flowing in the channels 3 and 4, although not filtered, Will not be mixed With said residues, and may be used for Washing purposes equally as Well as if it had not passed through the filter.

I claim In a filter, in combination With a chamber containing filtering material, means at the top and bottom for retaining filtering material in said chamber, a sheet of porous material extending across the entrance to said chamber, a conduit for the filtered Water leading from the outlet end of said chamher, and inlet and discharge conduits for unfiltered Water secured to the inlet end of said chamber and having a single intervening partition, said porous material extending closely adjacent, and substantially at right angles, to the inner end of said partition, and a deflecting plate extending across the end of said partition.

JAMES M. FORREST, JR. 

